Signal voids are typically noticed in these vessels on equally T1- and T2-weighted spin echo sequence, whereas a hypersignal is noticed on gradient echo and contrast-enhanced angiographic sequences indicating a superior-circulation lesion. Over the years, cerebral vascular malformations are already categorised in a variety of techniques by lots of authors, https://www.sgvascularctr.com/understanding-venous-malformation-treatments-in-singapore/